The market, two years in the planning, will open with about 20 vendors selling local meats, vegetables, fruits, eggs, flowers and baked goods, among other things.

"I can't wait to see it full of people walking around on Saturday," said market board member Kirsten Gunst. The market sprang from a grass-roots community effort with support of local businesses. "It's just all kind of coming together."

Multnomah County Commissioner Jeff Cogen will lead the first day of festivities at an 8:50 a.m. opening ceremony. Entertainment is scheduled throughout the day.